Symbols of communication signals
Thread Content
I’m asking for help – does anyone know what symbol is used to represent the communication between DCS and PLC in a control flow diagram?
In control flow diagrams, communication between DCS and PLC is generally represented by a bidirectional line with arrows. If the communication between DCS and PLC is digital, the name of the digital communication protocol can be indicated on the two-way line, or specialized digital communication symbols can be used ； If the communication between DCS and PLC is analog, the name of the analog communication signal can be indicated on the two-way line, or special analog communication symbols can be used. The specific symbol representation can be selected based on actual conditions and standard specifications. .
Refer to standard HG/T20505-2014, P43.